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<blockquote data-quote="Bullet bumper" data-source="post: 677435" data-attributes="member: 17844"><p>It can't hurt to try some other ammo . </p><p>If the ammo and the scope are ok then it has to be either a bedding issue or something strange about the way the bullet chambers when the gun is cold or weird barrel vibrations when the barrel is cold . </p><p>It may be one of those weird issues that can't be easily identified.</p><p>If all else fails and you have done lots to fix the problem then maybe you should think about selling the gun or if you still want to keep it get an inch cut off the barrel tos ee if it changes the harmonics . Rimfires don't usually have much barrel harmonics due to the low pressure round but who knows what this gun is doing. </p><p>CZ's sometimse have very tightly fitted barrels . They put them in at the factory with a machine that locks them up very tight . Well mine are that way. I removed the barrel from one of my Brno Cz's and it was as tight as hell. In the end I reckoned it was so tight it was distorting the action . So I lapped the barrel threads to a nice even and better fit and accuracy did improve some what . It was quite accurate before but it got better after releasing that tight barrel stress on the action ring.</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 677435, member: 17844"] It can't hurt to try some other ammo . If the ammo and the scope are ok then it has to be either a bedding issue or something strange about the way the bullet chambers when the gun is cold or weird barrel vibrations when the barrel is cold . It may be one of those weird issues that can't be easily identified. If all else fails and you have done lots to fix the problem then maybe you should think about selling the gun or if you still want to keep it get an inch cut off the barrel tos ee if it changes the harmonics . Rimfires don't usually have much barrel harmonics due to the low pressure round but who knows what this gun is doing. CZ's sometimse have very tightly fitted barrels . They put them in at the factory with a machine that locks them up very tight . Well mine are that way. I removed the barrel from one of my Brno Cz's and it was as tight as hell. In the end I reckoned it was so tight it was distorting the action . So I lapped the barrel threads to a nice even and better fit and accuracy did improve some what . It was quite accurate before but it got better after releasing that tight barrel stress on the action ring. [/QUOTE]
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